Sleeping bag



FIG. 1 is a front elevational view of sleeping bag, showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is an enlarged top view thereof;

FIG. 6 is an enlarged bottom view thereof; and,

FIG. 7 is a front elevational view thereof, showing the inner collar in a retracted position.

The broken lines shown throughout the various figures represent stitching. 

CLAIM The ornamental design for sleeping bag, substantially as shown and described. 